“Menopause” is the hilarious story of four women who meet in a tussle over a sale-rack bra at Bloomingdale’s. The gals have seemingly nothing in common — well, nothing and everything: hot flashes, night sweats, memory loss, chocolate binges, looney libidos and all the rest.

The theater becomes that rarest of all Vegas rarities: a party zone for the 40-and-better crowd. The audience can get so raucous that ushers are occasionally dispatched for some librarian-like shushing.

But the show doesn’t just appeal to the menopause crowd, said Paige O’Hara, the Broadway veteran who plays the soap star in the show. “We get a lot of younger people and for the first 15 minutes they’re looking at us like we’re from outer space. But then they get into it and have a really great time.”